Preheat your oven to 375°F. Roll out a pie crust and place it in a pie dish. Cook bacon in a skillet until crispy, then crumble and sprinkle over the crust. Top with chopped asparagus and grated Gruyere cheese. Whisk together eggs, milk, salt, and pepper in a bowl, then pour over the asparagus mixture. Bake for 35-40 minutes, until the eggs are set and the crust is golden brown. Serve hot or cold.
